Our Guardian .308 Upper Receiver Assemblies are DPMS / Knights compatible, and they will work on JD Machine Lowers, Tactical Machining Lowers, DPMS, and most other DPMS pattern/style lower receivers.

Our Guardian .308 Upper Receiver Assemblies will not work with the MEGA MA10 lower receiver, but we can build you one of the same .308 Guardian upper configurations we have listed on our website using the Mega MA10 Uppers if you own a Mega MA10 lower, but you will need to email us for a price quote.

We will also start selling custom .308 AR buffers and springs that will work with an AR15 buffer tube, so you can run stocks like the Magpul UBR.

More pics will be posted soon from other configurations we are currently building for customers.